1. Cadillac Ranch (Amarillo, Texas)
A public art installation by members of the Ant Farm, Cadillac Ranch is a row of Cadillacs buried nose-first into the ground. The angle at which they jut out of the earth corresponds to the Great Pyramid of Giza.
2. Minister’s Treehouse (Crossville, Tennessee)
The treehouse, built by Minister Horace Burgess, contains 80 rooms, including a church and a bell tower. Minister’s Treehouse was closed by the state fire marshal in 2012.